The van slammed into two cars, then a taxi cab — and the driver then got into the white van he had been racing, which fled on Flatbush Avenue, witnesses said.

“He got in the white van and he got away,” said cab driver Shahid Iqbal, 32, of Bensonhurst, who was on his way home when he was hit.

Elizabeth Jollie, 56, had been sitting in the passenger seat of her brother’s Chevy Malibu hybrid when the van plowed into it.

“I saw the van coming in the wrong lane, I said ‘Jesus! Jesus!’ Then the van hit and shook the car,” said Jollie. “The lady in the silver car I saw get out of the car and say someone’s underneath. I called 911, I didn’t see the man breathing.”

EMS found the pedestrian with severe trauma to his body, and rushed him to Kings County Hospital, where he died, police said. His name has not been released pending family notification.

The others hurt were in stable condition.

“The guy was trapped under the vehicle, had wounds on his head,” said Russel Felix, 32, a barber. “Half of his head was red, it had no skin.”